Programming PHP

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Files, directories, and filesystem basename, chdir, chgrp, chmod, chown, chroot, clearstatcache, closedir, copy, dirname, disk_free_space, disk_total_space, fclose, feof, fflush, fgetc, fgetcsv, fgets, fgetss, file, file_exists, fileatime, filectime, filegroup, fileinode, filemtime, fileowner, fileperms, filesize, filetype, flock, fopen, fpassthru, fputs, fread, fscanf, fseek, fstat, ftell, ftruncate, fwrite, getcwd, getlastmod, is_dir, is_executable, is_file, is_link, is_readable, is_uploaded_ file, is_writable, is_writeable, link, linkinfo, lstat, mkdir, move_uploaded_ file, opendir, pathinfo, pclose, readdir, readfile, readlink, realpath, rename, rewind, rewinddir, rmdir, set_file_buffer, stat, symlink, tempnam, tmpfile, touch, umask, unlink Functions call_user_func, call_user_func_array, create_function, func_get_arg, func_ get_args, func_num_args, function_exists, get_defined_functions, get_ extension_funcs, get_loaded_extensions, register_shutdown_function, register_ tick_function, unregister_tick_function HTTP get_browser, get_meta_tags, header, headers_sent, parse_str, parse_url, rawurldecode, rawurlencode, setcookie Mail mail Math abs, acos, asin, atan, atan2, base_convert, bindec, ceil, cos, decbin, dechex, decoct, deg2rad, exp, floor, getrandmax, hexdec, lcg_value, log, log10, max, min, mt_getrandmax, mt_rand, mt_srand, number_format, octdec, pi, pow, rad2deg, rand, round, sin, sqrt, srand, tan Network checkdnsrr, fsockopen, gethostbyaddr, gethostbyname, gethostbynamel, getmxrr, getprotobyname, getprotobynumber, getservbyname, getservbyport, ip2long, long2ip, pfsockopen, socket_get_status, socket_set_blocking, socket_set_ timeout Output control flush, ob_end_clean, ob_end_flush, ob_get_contents, ob_get_length, ob_ gzhandler, ob_implicit_flush, ob_start <strong>PHP</strong> options/info assert, assert_options, dl, extension_loaded, get_cfg_var, get_current_user, get_extension_funcs, get_included_files, get_loaded_extensions, get_magic_ quotes_gpc, get_required_files, getenv, getlastmod, getmyinode, getmypid, getrusage, highlight_file, highlight_string, ini_alter, ini_get, ini_restore, ini_set, localeconv, parse_ini_file, php_logo_guid, php_sapi_name, php_uname, phpcredits, phpinfo, phpversion, putenv, set_magic_quotes_runtime, set_time_ limit, version_compare, zend_logo_guid, zend_version 376 | Appendix A: Function Reference This is the Title of the Book, eMatter Edition Copyright © 2002 O’Reilly & Associates, Inc. All rights reserved.
Program execution escapeshellarg, escapeshellcmd, exec, passthru, putenv, shell_exec, sleep, system, usleep Strings addcslashes, addslashes, base64_decode, base64_encode, chop, chr, chunk_split, convert_cyr_string, count_chars, crypt, echo, ereg, ereg_replace, eregi, eregi_ replace, explode, get_html_translation_table, get_meta_tags, hebrev, hebrevc, highlight_string, htmlentities, htmlspecialchars, implode, iptcparse, join, levenshtein, localeconv, ltrim, md5, metaphone, nl2br, number_format, ord, parse_ str, parse_url, print, printf, quoted_printable_decode, quotemeta, rtrim, setlocale, similar_text, soundex, split, spliti, sprintf, sql_regcase, sscanf, str_pad, str_repeat, str_replace strcasecmp, strchr, strcmp, strcoll, strcspn, strip_tags, stripcslashes, stristr, strlen, strnatcasecmp, strnatcmp, strncasecmp, strncmp, strpos, strrchr, strrev, strrpos, strspn, strstr, strtok, strtolower, strtoupper, strtr, substr, substr_count, substr_replace, trim, ucfirst, ucwords, vprintf, vsprintf, wordwrap Type functions doubleval, get_resource_type, gettype, intval, is_array, is_bool, is_double, is_ float, is_int, is_integer, is_long, is_null, is_numeric, is_object, is_real, is_ resource, is_scalar, is_string, settype, strval URLs base64_decode, base64_encode, parse_url, rawurldecode, rawurlencode, urldecode, urlencode Variable functions compact, empty, extract, get_defined_constants, get_defined_vars, import_ request_variables, isset, list, print_r, putenv, serialize, uniqid, unserialize, unset, var_dump Alphabetical Listing of <strong>PHP</strong> Functions abs int abs(int number) float abs(float number) Returns the absolute value of number in the same type (float or integer) as the argument. acos double acos(double value) Returns the arc cosine of value in radians. This is the Title of the Book, eMatter Edition Copyright © 2002 O’Reilly & Associates, Inc. All rights reserved. acos | 377
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Programming PHP
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Programming PHP by Rasmus Lerdorf a
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Colophon Our look is the result of
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Accessing Individual Characters 79
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Concealing PHP Libraries 293 PHP Co
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clarify the explanations, and the p
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There is a web page for this book,
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Chapter 2 CHAPTER 2 Language Basics
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Comments Comments give information
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*/ echo("l=$l m=$m n=$n\n"); ?> Now
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change. Constants are referred to b
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PHP recognizes floating-point numbe
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• The empty string ("") and the s
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Chapter 6 describes classes and obj
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The old value of $black is lost. In
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update_counter( ); update_counter(
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Table 2-3. PHP operators P A Operat
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The division and multiplication ope
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Autoincrement and Autodecrement Ope
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Bitwise Operators The bitwise opera
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something is true. For example, you
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Because all operators are required
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if The if statement checks the trut
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A switch statement is given an expr
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if ($i == 5) break; // breaks out o
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This program adds the numbers from
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loops, and complain if the file bei
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XML Style Because of the advent of
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and other such niceties. Some will
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Chapter 3 CHAPTER 3 Functions A fun
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Typically, functions return some va
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As we discussed in Chapter 2, the e
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Example 3-5. Doubler redux function
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Missing Parameters PHP lets you be
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Anonymous Functions Some PHP functi
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echo "$who was $where"; Kilroy was
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As a special case, you can put a se
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• A padding specifier denoting th
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Boolean values and NULL are not mea
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Changing Case PHP has several funct
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The quote_style and charset argumen
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Query-string encoding The urlencode
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The comparison operators (=) also w
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The Levenshtein algorithm calculate
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The str_repeat( ) function takes a
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print_r($a);Array ( [0] => Fred [1]
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The c in strcspn( ) stands for comp
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These three kinds of patterns can b
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Subpatterns You can use parentheses
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Table 4-8. POSIX anchors Anchor Mat
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Example 4-1. Credit-card validator
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Character Classes Perl-style regula
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Trailing Options Perl-style regular
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A simple use of positive lookahead
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For example: preg_match('/y.*e$/',
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Pass an array of strings as subject
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Quoting for regular expressions The
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Identifying Elements of an Array Yo
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array is almost always a programmer
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Two or more consecutive commas in t
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echo "true!\n"; } if (array_key_exi
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EXTR_PREFIX_SAME, which says that t
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echo "$key is $value\n"; } 0 is spa
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The default argument, if provided,
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you need to answer questions like
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Example 5-3. Sorting arrays (contin
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Here’s how to randomize the order
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Sets Arrays let you implement the b
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Here’s the output from Example 5-
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Terminology Everyobject-oriented la
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You can use variable variables with
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} function set_name ($new_name) { $
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The object created bythe Person con
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Example 6-1. Displaying all declare
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Example 6-2. Object introspection f
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Here are some sample classes and ob
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PHP has two hooks for objects durin
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Example 6-5 shows the file next.php
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the request contains a blank line,
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SERVER_NAME The hostname, DNS alias
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The biggest difference between GET
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Figure 7-1. The chunkify form and i
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Example 7-4. Temperature conversion
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Example 7-6. Multiple selection val
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Example 7-8. Sticky multivalued che
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Files are stored in the server’s
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“me@aol” by requiring an at sig
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To mark a document as already expir
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A third technique for maintaining s
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Example 7-10. Preference selection
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Session basics To enable sessions f
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Custom storage By default, PHP stor
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When a session is completed, the de
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Chapter 8 CHAPTER 8 Databases PHP h
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columns, each of which has a name a
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Figure 8-1. The movie page the data
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$db = DB::connect($datasource); if
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string(4) "1962" ["name"]=> string(
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The executeMultiple( ) method takes
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echo "$k"; if (is_array($v)) { a_to
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Two HTML forms are needed to popula
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Example 8-3. Database connection ab
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Example 8-4. Backend administration
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Example 8-5. Adding a business (con
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Example 8-5. Adding a business (con
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The business listings page is illus
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The series of requests sent by the
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many colors as you need. The latter
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image-generating function. Example
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Example 9-4. Adding text to an imag
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Example 9-6. Displaying vertical Tr
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Example 9-8. Caching dynamic button
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You can also take this a step furth
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For a signed integer, the leftmost
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True Color Color Indexes The color
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Chapter 10 CHAPTER 10 PDF Adobe’s
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Figure 10-1. Hello world in a PDF d
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Type, Content-Disposition, and Cont
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Example 10-3. Changing the origin (
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Example 10-4. Text alignment within
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Example 10-5. Changing text attribu
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usr/share/fonts FontAFM LuciduxSans
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Adding an image to a PDF document i
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Example 10-8. Nonproportional scali
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Figure 10-9. A sample path The pdf_
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The width and height parameters spe
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Example 10-11. Using a template Th
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Example 10-12. Using bookmarks and
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Example 10-13. Specifying a link (c
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Figure 10-16. Closed note The conte
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In HTML, you often have an open tag
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Example 11-1. Generating an XML doc
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The end element handler is called w
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If your external entity reference h
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characters outside the target encod
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XML_ERROR_BAD_CHAR_REF XML_ERROR_BI
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Figure 11-2. Book details comment).
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Example 11-10. bookparse.xml (conti
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Example 11-12. News XSL transform
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more information). The xmlrpc exten
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equest, but it doesn’t know how t
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Chapter 12 CHAPTER 12 Security PHP
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These directives ensure that PHP er
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Restrict Filesystem Access to a Spe
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function or PHP’s copy( ) functio
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• Any system call (through functi
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You can globally disable particular
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Chapter 13 CHAPTER 13 Application T
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user.template. It uses the {DESTINA
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{ARTICLE} might be useful, as it wo
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} ob_start('rewrite'); ?> Visit our
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To turn off error reporting entirel
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Example 13-5. Log-rolling error han
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Before you begin optimization, ask
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changes you make to your code as yo
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• Only include or require files t
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MySQL replication Sometimes the dat
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Chapter 14 CHAPTER 14 Extending PHP
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examples, and you are strongly enco
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int Integer/long long Same as int a
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zend_module_entry rot13_module_entr
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Page 349 and 350: Resources A resource is a generic d
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Page 363 and 364: Figure 15-3. Gleaning syntax from W
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Page 378 and 379: addcslashes string addcslashes(stri
Page 380 and 381: array_merge array array_merge(array
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Page 384 and 385: asort void asort(array array[, int
Page 386 and 387: call_user_func mixed call_user_func
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Page 390 and 391: cos double cos(double value) Return
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Page 398 and 399: fflush int fflush(int handle) Commi
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Page 404 and 405: ftell int ftell(int handle) Returns
Page 406 and 407: get_current_user string get_current
Page 408 and 409: get_parent_class string get_parent_
Page 410 and 411: getmypid int getmypid( ) Returns th
Page 412 and 413: header void header(string header[,
Page 414 and 415: implode string implode(array string
Page 416 and 417: is_double bool is_double(mixed valu
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number_format string number_format(
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openlog int openlog(string identity
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parse_url array parse_url(string ur
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phpinfo void phpinfo([int what]) Ou
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printf int printf(string format[, m
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eaddir string readdir(int handle) R
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ound double round(double number[, i
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setlocale string setlocale(mixed ca
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sort void sort(array array[, int fl
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str_pad string str_pad(string strin
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%H Hour in 24-hour format, includin
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strncmp int strncmp(string one, str
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strtr string strtr(string string, s
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tmpfile int tmpfile( ) Creates a te
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unregister_tick_function void unreg
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wordwrap string wordwrap(string str
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old versions of aspell, you should
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DBM For very simple database instal
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Hyperwave Hyperwave is a database f
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mcrypt This extension provides an i
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pdflib pdflib provides support for
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Sybase This extension provides supp
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Symbols & (ampersand) &= (bitwise A
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| (vertical bar) |= (bitwise OR ass
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aspell PHP library, 457 assert() fu
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checksums mhash library, 464 valida
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cryptography mcrypt extension, 464
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DTD (Document Type Definition), 263
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System V Semaphores and Shared memo
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calling, 61 for each array element,
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H hash mark (#) in comments, 19 hea
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interlacing GIF images, 246 interna
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masks, using in string searches, 94
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serialization of, 153-157, 438 _ _s
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pdf_open_file() function, 234 pdf_p
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with echo, 76 with print() function
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S Sablotron C library (XSLT support
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sql_regcase() function, 443 sqrt()
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tan() function, 451 target encoding
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function parameters, 33 functions f
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xml_set_unparsed_entity_decl_handle
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